Tire-building machine.



T. MIDGLEY.

TIRE BUILDING mcum APPLICATlONHLED AR. I8. 19.

1,161,947. ratente m ap. 1915.

if? g N N UNITED STATES PATENT oFFIcn.

THOMAS MIDGLEY, or WORTHINGTON, OHIO, ASSIGNOR To MORGAN & WRIGHT, orDETROIT, MICHIGAN, A oonPoRAT oN on MICHIGAN.

TIRE-BUILDING MACHINE.

Specification of Letters Patent.

Application filed March 18. 1914. Serial No. 825,481.

To all whom it may concern:

Be it known that I, THoMAs MIDGLEY, acitizen of the United statesresiding at Worthington, county'of Franklin, and b'tate of Ohio,.ha\'einvented certain new and use ful Improvements in Tire-Building Machines, of which the following .18 a full,

clear, and exact disclosure.

sively to a ring form, each layer as it is apthe sides of the fabric, in

I being plied being centrally pressed against the medial portion of theform and being then pressed at the lateral portions against the sides ofthe form, this latter operation be ing either manually performed orpower performed by radially yi which operate at spaced points on thesides of the fabric.

The present invention provides a novel shaping device which operatessimultane- 01151311 on all points in a circumference oncontra-distinction to the usual tools operating at spaced points,

whereby the shaping of the sides of the easing is more effectivelyaccomplished than with the usual methods now in use.

With the above objects in View, the invention consists in certain noveldetails of construction and the combination of parts hereinafter fulldescribed and claimed, it understood that various modifications may beresorted to within the scope of the appended claims.

In the accompanying drawing forming part of this specification-Figure 1is a side elevation of onecembodiment of my inven tion; Fig.2 is afragmentary sectional View of the same.

Referring now to the drawing in which like characters of referencedesignate similar parts, 10 designates a ring form of the usual and wellknown construction, the form being mounted on a frame 11 which isrotated on a standard 12 by means of a drive mechanism 13. i

In carrying out my invention, I provide a pair of annular guides 14,disposed one on either side of the ring form, and preferably connectedto the latter through the instru-v oving shaping tools guides 14:.

mentality of clips 15 which are terminally slotted and receive setscrews 16 carried by the form. Each guide is formed with a curved innerface 17 that conforms to .the contour of the'adjacent side of the ringform as best shownin Fig. 1, the face extending from near the medialportion of the form to about the base of the form, and coacting with theform in defining a circuitous guide-passage18, the width of which may bevaried as desired, by of the guide on the set-screws. The shaping toolshown in the present embodiment is in the'form of a wire 19 which isanchored at one end to a'stationary support as shown at 20, and is thenpassed circum-'. ferentially of the form-to produce. a closed loop 2-1adapted to enter the guide-passage 18. There are two of these wires,vone for each passage, the loops of the wires being simultaneouslyconstricted radially ,by anoutward pull'upon the free. ends of thewires. T he'guides 14 function as-rigid back ings during contraction ofthe'loop's toiur ge the loops constantly toward the form, for a purposewhich will presently appear. 5-

Upon tautening the wires, each loop 21 will be contracted and passvintoits guide channel 18, thereby forming a fold 22 ahead of it in thecorresponding edge portion of the fabric 23 andpressmg the fold at thebight into the. channel, until said edge portion is all laid upon theadjacent side ofvthe form. The loop is held by the corresponding guide17 to constantly engage the fabric at all points in a circumferencecorresponding to the circumference of the loop at any the fabric asshownin dotted lines in Fig. 1,

such edge portionspassing'across the passages 18 at the outerperipheries of the wires 19 are applied to the fabric in position Theform is now halted and the iio - formed.

to; enter the passage 18. The form is now rotated slowly and the freeends of the Wires and arigid guide for the tool spaced from revolubleform for the tire,

the form and conforming to the configura tions of the tire to be formed.

.2. A tire building machine embodying a a shaping tool,

and-a rigid guide for the tool carried by the form andconforming to theconfiguration 20 of the tire to be formed.

3. A- tire'building machine embodying a revoluble form for the tire, ashaping tool, and a rigid guide for the tool carried by the form andspaced therefrom and conforming to the connguration of the fire to beformed.

4. A tire building machine embodying a revoluble' form for the tire, ashaping tool, and an annular guide for the tool carried by the form andconforming to the configuration of the tire to be formed. I

-5. ,A tire building machine embodying a' revoluble form for the tire, aguide spaced therefrom, and a shaping'tool controlled by Y :the guide tooperate simultaneously on all on the tire to be points in acircumference are shaped 6. A tire buildin g machine embodying arevoluble form for the tire, therefrom, and a contractile shaping toolcontrolledby the guide to operate on the tire to be formed.

7. A tire building machine embodying a revoluble form for the tire, aguide spaced therefrom and conforming to the configuration of the tireto be formed, and a shaping tool operated by the configuration. of saidguide to operate simultaneously on all points in a circumference on thetire to be formed.

8. A tire building machine embodying a revoluble form for the tirematerial, :1 lateral guide spaced from the form and conforming to theconfiguration thereof, and a radially movable shaping tool controlled bythe guide for forming a fold in the material and causing the fold at thebight to conform to the configuration of said form.

9; A tire building machine embodying a revoluble form for the tirematerial, a lateral guide Spaced from the form and conforming to theconfiguration thereof, and a radially movable contractile shaping toolcontrolled by the guide for forming a fold in the material and causingthe fold at the a guide spaced bight to conform to the contour of saidform.

Signed at Detroit, county of \Vayne and State of Michigan, this 13th dayof March, 1914. v

THOMAS MIDGLEY.

Witnesses:

E; LA BUSCHEWSKY, J. H S

. \VIFT.

Copies of this patent inay be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, D. G.

